var createError = require("http-errors")
var express = require("express")
var path = require("path")
var cookieParser = require("cookie-parser")
var morgan = require("morgan")
const logger = require("./logger")

// 路由文件引用
var indexRouter = require("./routes/index")
var usersRouter = require("./routes/users")

var app = express()

// 视图模板设置
app.set("views", path.join(__dirname, "views"))
app.set("view engine", "jade")

// 使用morgan打印日志
app.use(morgan("dev"))
// 对post请求来的数据json格式化
app.use(express.json())
app.use(express.urlencoded({ extended: false }))
app.use(cookieParser())
app.use(express.static(path.join(__dirname, "public")))

app.use("/", indexRouter)
app.use("/users", usersRouter)

// 捕获404错误
app.use(function (req, res, next) {
  next(createError(404))
})

/* // error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message
  res.locals.error = req.app.get("env") === "development" ? err : {}

  // render the error page
  res.status(err.status || 500)
  res.render("error")
}) */
const errorHandler = (err, req, res, next) => {
  logger.error(`${req.method} ${req.originalUrl} ` + err.message)
  const errorMSg = err.message
  res.status(err.status || 500).json({
    code: -1,
    success: false,
    message: errorMSg,
    data: {},
  })
}
app.use(errorHandler)

module.exports = app
